A study of the health impact of 9/11 expected to be released soon will find increases in cancer rates similar to those in a city Health Department study released this week.

Mount Sinai School of Medicine, which has studied 20,000 first responders since the attacks, will soon publish a report that is “virtually identical” to findings the city released this week, said Philip Landrigan, a doctor who headed the research.

He specifically noted a 14 percent overall increase in cancer rates among first responders, with particular spikes in thyroid and prostate cancers and multiple myeloma, and said his research reached similar conclusions to the city’s.